Semiconductor integrated circuit

ABSTRACT

A semiconductor integrated circuit may include: a memory block partitioned into a first region and a second region; a data latch unit configured to latch data outputted from the memory block in response to a control signal; and a control circuit configured to generate a source signal separated into an odd order and an even order in response to a column access signal consecutively inputted to access the first region or the second region, and to generate the control signal in response to the source signal.

CROSS-REFERENCES TO RELATED APPLICATION

The present application is a Division of U.S. application Ser. No.14/148,254, filed on Jan. 6, 2014, and the present application claimspriority under 35 U.S.C. §119(a) to Korean application number10-2013-0132393, filed on Nov. 1, 2013, in the Korean IntellectualProperty Office, which is incorporated herein by reference in itsentirety.

BACKGROUND

1. Technical Field

Various embodiments relate to a semiconductor circuit, and moreparticularly, to a semiconductor integrated circuit.

2. Related Art

A semiconductor integrated circuit may include a plurality of unitmemory regions, for example, a plurality of memory banks.

The plurality of memory banks of the semiconductor integrated circuitmay be independently controlled, respectively.

In addition, each of the memory bank may be divided into an up bank anda down bank.

For example, data of the up bank is outputted through a data line when aread command for accessing the up bank is applied and data of the downbank is outputted through a data lines when a read command for accessingthe down bank is applied.

The semiconductor integrated circuit may include a data latch circuit,e.g. a pipe latch, as a necessary component for providing a prefetchfunction according to a high-speed operation.

The pipe latch receives data outputted from a memory bank according to acontrol signal for controlling an input of the pipe latch.

SUMMARY

In an embodiment of the present invention, a semiconductor integratedcircuit includes: a memory block partitioned into a first region and asecond region; a data latch unit configured to latch data outputted fromthe memory block in response to a control signal; and a control circuitconfigured to generate a source signal separated into an odd order andan even order in response to a column access signal consecutivelyinputted to access the first region or the second region, and togenerate the control signal in response to the source signal.

In an embodiment of the present invention, a semiconductor integratedcircuit includes: a data latch unit configured to latch data outputtedfrom a memory block in response to a control signal; an order controlunit configured to generate an order strobe signal pair by separatingeach strobe signal into an even order and an odd order in response tothe strobe signal for access to the memory block; a signal processingunit configured to generate an order source signal pair by controlling atiming of the order strobe signal pair; and a control signal generationunit configured to generate the control signal by passing one of theorder source signal pair, when the other of the order source signal pairis inactivated.

In an embodiment of the present invention, a semiconductor integratedcircuit includes: a memory block comprising a first region and a secondregion; a data latch unit configured to latch data outputted from thememory block in response to a control signal; an order control unitconfigured to generate a first order strobe signal pair and a secondorder strobe signal pair, in which a first strobe signal for access tothe first region and a second strobe signal for access to the secondregion are individually separated into an even order and an odd order,in response to the first strobe signal and the second strobe signal; asignal processing unit configured to control each timing of the firstorder strobe signal pair and the second order strobe signal pair, and togenerate a first order source signal pair and a second order sourcessignal pair; and a control signal generation unit configured to generatethe control signal by passing one of two signals, which are obtained bycombining signals of the first order source signal pair and the secondorder sources signal pair by even orders and by odd orders, when theother of the two signals is inactivated.

BRIEF DESCRIPTION OF THE DRAWINGS

Features, aspects, and embodiments are described in conjunction with theattached drawings, in which:

FIG. 1A is a block diagram illustrating the configuration of asemiconductor integrated circuit according to one embodiment of thepresent invention;

FIG. 1B is a plan view illustrating the memory block according to oneembodiment of the present invention.

FIG. 2 is a block diagram illustrating the configuration of a controlcircuit capable of being implemented in the circuit of FIG. 1 accordingto one embodiment;

FIG. 3 is a circuit diagram illustrating the internal configuration of acontrol signal generation unit capable of being implemented in thecircuit of FIG. 2;

FIG. 4 a block diagram illustrating the configuration of a controlcircuit capable of being implemented in the circuit of FIG. 1 accordingto an embodiment;

FIG. 5 is a circuit diagram illustrating the internal configuration of acontrol signal generation unit capable of being implemented in thecircuit of FIG. 4; and

FIG. 6 is an operation timing diagram illustrating the control circuitaccording to an embodiment.

FIG. 7 is a block diagram of various features of an electronic system,according to various embodiments of the invention.

DETAILED DESCRIPTION

Hereinafter, a semiconductor integrated circuit according to the presentinvention will be described below with reference to the accompanyingdrawings through exemplary embodiments. However, the present inventionis not limited to an embodiment disclosed below and may be implementedin various forms and the scope of the present invention is not limitedto the following embodiments. Rather, the embodiment is provided to moresincerely and fully disclose the present invention and to completelytransfer the spirit of the present invention to those skilled in the artto which the present invention pertains, and the scope of the presentinvention should be understood by the claims of the present invention

As illustrated in FIG. 1, a semiconductor integrated circuit 1 accordingto one embodiment of the present invention may include a memory block 2,a memory latch unit 3, a data input/output unit 4 and a control circuit100.

Referring to FIG. 1B, the memory block 2 may include a plurality ofmemory banks BK<a:h>. The plurality of memory banks BK<a:h> may beclassified into up banks BK<a:d> and down banks BK<e:h>. For example,the up banks BK<a:d> may be arranged in an upper row of the memory block2 and the down banks BK<e:h> may be arranged in an down row of thememory block 2. Further, one of the up banks and one of the down banksmay be composed of one bank. That is, one of the up banks and one of thedown banks may be a half bank, respectively.

The memory latch unit 3 may be configured to latch and output data whichis outputted from the memory block 2 through a global input/output lineGIO, to the data input/output unit 4 in response to a control signalPINB<0:5>.

The memory latch unit 3 may be a necessary component for providing aprefetch function according to the high speed operation of asemiconductor integrated circuit, and may include, for example, a pipelatch.

The control circuit 100 may be configured to generate a control signalPINB<0:5> in response to a column access signal CASPRDWTB, an addresssignal BA<0:2>, and a write state signal WTS.

In this case, the column access signal CASPRDWTB may be a column accessstrobe (CAS) signal generated according to a read command or a writecommand.

For convenience sake, the address signal BA<0:2> may be divided into afirst address signal BA<2> and a second address signal BA<0:1>.

The first address signal BA<2> may be a bank address signal forselecting the up banks BK<a:d> or the down banks BK<e:h>.

The second address signal BA<0:1> may be a bank address signal forselecting one bank from among the up banks BK<a:d> or one bank fromamong the down banks BK<e:h>.

The write state signal WTS may be changed a logic level according to awrite operation and a read operation of the semiconductor integratedcircuit.

As shown in FIG. 2, a control circuit 100 according to one embodiment ofthe present invention may include a first region determination unit 110,a second region determination unit 120, a first bank determination unit210, a second bank determination unit 220, a first delay unit 310, asecond delay unit 320, a first summing unit 410, a second summing unit420, and a control signal generation unit 510.

The first region determination unit 110 may be configured to generate afirst strobe signal STB<0> in response to the column access signalCASPRDWTB and the first address signal BA<2>.

The first region determination unit 110 may be configured to generatethe first strobe signal STB<0> in response to the column access signalCASPRDWTB when the first address signal BA<2> has, for example, a logiclow value.

The second region determination unit 120 may be configured to generate asecond strobe signal STB<1> in response to the column access signalCASPRDWTB and the first address signal BA<2>.

The second region determination unit 120 may be configured to generatethe second strobe signal STB<1> in response to the column access signalCASPRDWTB when the first address signal BA<2> has, for example, a logichigh value.

The first bank determination unit 210 may be configured to generate afirst bank strobe signal STB_BKa in response to the first strobe signalSTB<0> and the second address signal BA<0:1>.

The first bank determination unit 210 may be configured to generate thefirst bank strobe signal STB_BKa corresponding to a bank, e.g. BKa,designated by the second address signal BA<0:1>, using the first strobesignal STB<0>.

The second bank determination unit 220 may be configured to generate asecond bank strobe signal STB_BKe in response to the second strobesignal STB<1> and the second address signal BA<0:1>.

The second bank determination unit 220 may be configured to generate thesecond bank strobe signal STB_BKe corresponding to a bank, e.g. BKe,designated by the second address signal BA<0:1>, using the second strobesignal STB<1>.

The first delay unit 310 may be configured to generate a first sourcesignal PSRC_a using the first bank strobe signal STB_BKa according tothe write state signal WTS.

The first delay unit 310 may be configured to generate a plurality oftiming signals BWEN_a, IOSTBP_a, LIOPCG_a, and YI_source_a using thefirst bank strobe signal STB_BKa according to the write state signalWTS.

Here, the “BWEN_a” may be a bank write enable signal, the “IOSTBP_a” maybe an input/output strobe signal, the “LIOPCG_a” may be a local I/Oprecharge signal, and the “YI_source_a” may be a column selectionsignal.

In this case, the first delay unit 310 may generate the signals fordriving one, e.g. BKa, of up banks, and may be configured for each ofthe up banks BK<a:d>. That is, the first delay unit 310 may generate the“BWEN_a” which is the bank write enable signal for a selected up bank(for example, bank <a>), the “IOSTBP_a” which is the input/output strobesignal provided to the selected up bank, the “LIOPCG_a” which is thelocal I/O precharge signal provided to the selected up bank, and the“YI_source_a” which is the column selection signal provided to theselected up bank.

The second delay unit 320 may be configured to generate a second sourcesignal PSRC_e using the second bank strobe signal STB_BKe according tothe write state signal WTS.

The second delay unit 320 may be configured to generate a plurality oftiming signals BWEN_e, IOSTBP_e, LIOPCG_e, and YI_source_e using thesecond bank strobe signal STB_BKe according to the write state signalWTS.

In this case, the second delay unit 320 may generate the signals fordriving one, e.g. BKe, of down banks, and may be configured for each ofthe down banks BK<e:h>. That is, the second delay unit 320 may generatethe “BWEN_e” which is the bank write enable signal for a selected downbank (for example, bank <e>), the “IOSTBP_e” which is the input/outputstrobe signal provided to the selected down bank, the “LIOPCG_e” whichis the local I/O precharge signal provided to the selected down bank,and the “YI_source_a” which is the column selection signal provided tothe selected down bank.

The first summing unit 410 may be configured to sum first source signalsPSRC_a, PSRC_b, PSRC_c and PSRC_d according to each bank and to generatean up bank source signal PSRC_UPBK.

The second summing unit 420 may be configured to sum second sourcesignals PSRC_e, PSRC_f, PSRC g and PSRC_h according to each bank and togenerate a down bank source signal PSRC_DNBK.

For reference, the control block 100 may include a plurality of delayingunit (not shown) for generating the PSRC_b to PSRC d and PSRC f to PSRCh. The delaying units have a substantially same circuit-structure withthe first and second delaying unit 310 and 320.

The control signal generation unit 510 may be configured to generate thecontrol signal PINB<0:5> in response to the up bank source signalPSRC_UPBK and the down bank source signal PSRC_DNBK.

Referring to FIG. 3, the control signal generation unit 510 may includea first combination logic 511, a shift register 512, and a secondcombination logic 513.

The first combination logic 511 may be configured to perform an ORoperation on the up bank source signal PSRC_UPBK and down bank sourcesignal PSRC_DNBK, and to generate an integrated source signal PSRC.

The shift register 512 may be configured to shift an initial value inregular sequence in response to an edge, e.g. a falling edge, of theintegrated source signal PSRC, and to generate a plurality of shiftsignals P<0:5>.

The second combination logic 513 may be configured to perform a NANDoperation on the integrated source signal PSRC and each of the shiftsignals P<0:5>, and to generate the control signal PINB<0:5>.

Referring to FIG. 4, a control circuit 101 according to an embodiment ofthe present invention may include a first region determination unit 110,a second region determination unit 120, a first bank determination unit230, a second bank determination unit 240, a first signal processingunit 330, a second signal processing unit 340, first to fourth summingunits 430, 440, 450, and 460, and a control signal generation unit 520and an order control unit 610.

The first region determination unit 110 may be configured to generate afirst strobe signal STB<0> in response to the column access signalCASPRDWTB and the first address signal BA<2>.

The first region determination unit 110 may be configured to generatethe first strobe signal STB<0> in response to the column access signalCASPRDWTB when the first address signal BA<2> has, for example, a logiclow value.

The second region determination unit 120 may be configured to generate asecond strobe signal STB<1> in response to the column access signalCASPRDWTB and the first address signal BA<2>.

The second region determination unit 120 may be configured to generatethe second strobe signal STB<1> in response to the column access signalCASPRDWTB when the first address signal BA<2> has, for example, a logichigh value.

The order control unit 610 may be coupled among the first and secondregion determination unit 110 and 120, and the first and second bankdetermination unit 230 and 240. T may be configured to generate a firstorder strobe signal pair STB_OD<0> and STB_EV<0> and a second orderstrobe signal pair STB_OD<1> and STB_EV<1> which are obtained byseparating the first strobe signal STB<0> and second strobe signalSTB<1> into an even-numbered order and an odd-numbered order, using anorder selection signal EVDO_SEL generated in response to the firststrobe signal STB<0> and second strobe signal STB<1>.

The order control unit 610 may include an order selection signalgeneration unit 611 and a control logic 612.

The order selection signal generation unit 611 may include a flip-flopand a plurality of logic gates.

The order selection signal generation unit 611 may be configured totoggle an order selection signal EVDO_SEL in response to the fallingedges of the first strobe signal STB<0> and second strobe signal STB<1>.

The control logic 612 may include a plurality of logic gates.

The control logic 612 may be configured to generate the first orderstrobe signal pair STB_OD<0> and STB_EV<0> by separating the firststrobe signal STB<0> into an even-numbered order and an odd-numberedorder in response to the order selection signal EVDO_SEL and an invertedorder selection signal EVDO_SEL. Further, the control logic 612 may beconfigured to generate the second order strobe signal pair STB_OD<1> andSTB_EV<1> by separating the second strobe signal STB<1> into aneven-numbered order and an odd-numbered order in response to the orderselection signal EVDO_SEL and an inverted order selection signalEVDO_SEL.

The first bank determination unit 230 may be configured to generate afirst bank order strobe signal pair STB_OD_BKa and STB_EV_BKa inresponse to the first order strobe signal pair STB_OD<0> and STB_EV<0>and the second address signal BA<0:1>.

The first bank determination unit 230 may be configured to generate thefirst bank order strobe signal pair STB_OD_BKa and STB_EV_BKacorresponding to a bank, e.g. BKa, designated by the second addresssignal BA<0:1> using the first order strobe signal pair STB_OD<0> andSTB_EV<0>.

The second bank determination unit 240 may be configured to generate asecond bank order strobe signal pair STB_OD_BKe and STB_EV_BKe inresponse to the second order strobe signal pair STB_OD<1> and STB_EV<1>and the second address signal BA<0:1>.

The second bank determination unit 240 may be configured to generate thesecond bank order strobe signal pair STB_OD_BKe and STB_EV_BKecorresponding to a bank, e.g. BKe, designated by the second addresssignal BA<0:1> using the second order strobe signal pair STB_OD<1> andSTB_EV<1>.

The first signal processing unit 330 may be configured to control thetiming of the first bank order strobe signal pair STB_OD_BKa andSTB_EV_BKa according to the write state signal WTS, and to generate afirst odd source signal pair PSRC_OD_a and PSRC_EV_a.

The first signal processing unit 330 may be configured to control thetiming of the first bank order strobe signal pair STB_OD_BKa andSTB_EV_BKa according to the write state signal WTS, and to generate aplurality of timing signals BWEN_a, IOSTBP_a, LIOPCG_a, and YI_source_a.

The first signal processing unit 330 may include a first combinationunit 331, a second combination unit 332, and a plurality of delay units333, 334 and 335.

The first combination unit 331 may be configured to pass the first bankorder strobe signal pair STB_OD_BKa and STB_EV_BKa when the write statesignal WTS has a logic low level, i.e. a level defining a readoperation.

The second combination unit 332 may be configured to perform an ORoperation on the first bank order strobe signal pair STB_OD_BKa andSTB_EV_BKa.

The delay units 333 and 334 may be configured to delay the output signalof the first combination unit 331 by a set time period, and then tooutput the output signal of the first combination unit 331 as the firstorder source signal pair PSRC_OD_a and PSRC_EV_a.

The delay unit 335 may be configured to delay the output signal of thesecond combination unit 332 by mutually different time periods when thewrite state signal WTS has a logic high level, i.e. a level defining awrite operation, and then to output a plurality of timing signalsBWEN_a, IOSTBP_a, LIOPCG_a, and YI_source_a.

In this case, the first signal processing unit 330 may generate thesignals for driving one, e.g. BKa, of up banks, and may be configuredfor each of the up banks BK<a:d>.

The second signal processing unit 340 may be configured to control thetiming of the second bank order strobe signal pair STB_OD_BKe andSTB_EV_BKe according to the write state signal WTS, and to generate asecond order source signal pair PSRC_OD_e and PSRC_EV_e.

The second signal processing unit 340 may be configured to control thetiming of the second bank order strobe signal pair STB_OD_BKe andSTB_EV_BKe according to the write state signal WTS, and to generate aplurality of timing signals BWEN_e, IOSTBP_e, LIOPCG_e, and YI_source_e.

The second signal processing unit 340 may include a first combinationunit 341, a second combination unit 342, and a plurality of delay units343, 344 and 345.

The first combination unit 341 may be configured to pass the second bankorder strobe signal pair STB_OD_BKe and STB_EV_BKe when the write statesignal WTS has a logic low level, i.e. a level defining a readoperation.

The second combination unit 342 may be configured to perform an ORoperation on the second bank order strobe signal pair STB_OD_BKe andSTB_EV_BKe.

The delay units 343 and 344 may be configured to delay the output signalof the first combination unit 341 by a set time period, and then tooutput the output signal of the first combination unit 341 as the secondorder source signal pair PSRC_OD_e and PSRC_EV_e.

The delay unit 345 may be configured to delay the output signal of thesecond combination unit 342 by mutually different time periods when thewrite state signal WTS has a logic high level, i.e. a level defining awrite operation, and then to output a plurality of timing signalsBWEN_e, IOSTBP_e, LIOPCG_e, and YI_source_e.

In this case, the second signal processing unit 340 may generate thesignals for driving one, e.g. BKe, of down banks, and may be configuredfor each of the down banks BK<e:h>.

The first summing unit 430 may be configured to sum up first odd sourcesignals PSRC_OD_a, PSRC_OD_b, PSRC_OD_c and PSRC_OD_d according to banksand to generate an up bank odd source signal PSRC_OD_UPBK.

The second summing unit 440 may be configured to sum up first evensource signals PSRC_EV_a, PSRC_EV_b, PSRC_EV_c and PSRC_EV_d accordingto banks and to generate an up bank even source signal PSRC_EV_UPBK.

The third summing unit 450 may be configured to sum up second odd sourcesignals PSRC_OD_e, PSRC_OD_f, PSRC_OD_g and PSRC_OD_h according to banksand to generate a down bank odd source signal PSRC_OD_DNBK.

The fourth summing unit 460 may be configured to sum up second evensource signals PSRC_EV_e, PSRC_EV_f, PSRC_EV_g and PSRC_EV_h accordingto banks and to generate a down bank even source signal PSRC_EV_DNBK.

The control signal generation unit 520 may be configured to generate acontrol signal PINB<0:5> in response to the up bank odd source signalPSRC_OD_UPBK, the up bank even source signal PSRC_EV_UPBK, the down bankodd source signal PSRC_OD_DNBK, and the down bank even source signalPSRC_EV_DNBK.

As shown in FIG. 5, the control signal generation unit 520 may include afirst combination logic 521, an overlap prevention unit 522, a shiftregister 523, and a second combination logic 524.

The first combination logic 521 may be configured to generate an outputsignal PSRC_EV obtained by performing an OR operation on even-numberedsignals and an output signal PSRC_OD obtained by performing an ORoperation on odd-numbered signals, with respect to the up bank oddsource signal PSRC_OD_UPBK, the up bank even source signal PSRC_EV_UPBK,the down bank odd source signal PSRC_OD_DNBK, and the down bank evensource signal PSRC_EV_DNBK.

The overlap prevention unit 522 may be configured to generate anintegrated even source signal PSRC_EVD and an integrated odd sourcesignal PSRC_ODD, which are prevented from overlapping each other. Theoverlap prevention unit 522 may be configured to receive the outputsignals PSRC_EV and PSRC_OD and to pass one of the output signals whenthe other signal of the output signals is inactivated. The overlapprevention unit may include a plurality logic gates and the pluralitylogic gates may be properly coupled to perform the above operation.

By the configuration described above, it is possible to prevent an errorin which one of the integrated even source signal PSRC_EVD andintegrated odd source signal PSRC_ODD is at an improper timing.

The shift register 523 may be configured to shift the respective initialvalues in response to the respective edges, e.g. falling edges, of theintegrated even source signal PSRC_EVD and integrated odd source signalPSRC_ODD, and to generate a plurality of first shift signals P_EV<0:2>and a plurality of second shift signals P_OD<0:2>.

The shift register 523 may include a plurality of flip-flops.

The second combination logic 524 may be configured to generate a controlsignal PINB<0:5> by performing a NAND operation on the integrated evensource signal PSRC_EVD and each of the plurality of first shift signalsP_EV<0:2> and by performing a NAND operation on the integrated oddsource signal PSRC_ODD and each of the plurality of second shift signalsP_OD<0:2>.

The operation of the control circuit 101 will be described below withreference to FIG. 6.

Referring the FIG. 6, an operation of the control circuit 101 isdescribed as follows.

For example, it is assumed that five accesses to the up banks BK<a:d>are consecutively performed, and then three accesses to the down banksBK<e:h> are performed to perform a data read operation.

Since five accesses to the up bank BK<a:d> are consecutively performedand then three accesses to the down bank BK<e:h> are performed, thefirst strobe signal STB<0> is generated five times and the second strobesignal STB<1> is generated three times.

According to the first strobe signal STB<0> and second strobe signalSTB<1>, the order selection signal EVDO_SEL is toggled.

A first order strobe signal pair STB_OD<0> and STB_EV<0> and a secondorder strobe signal pair STB_OD<1> and STB_EV<1> are generated accordingto the order selection signal EVDO_SEL. For example, the first orderstrobe signal pair STB_OD<0> and STB_EV<0> may be separated andgenerated in a toggle period of the first strobe signal STB<0>,according to a logic level of the order selection signal EVDO_SEL.Further, the second order strobe signal STB_OD<1> and STB_EV<1> may beseparated and generated in a toggle period of the second strobe signalSTB<1>, according to a logic level of the order selection signalEVDO_SEL.

An integrated even source signal PSRC_EVD is generated by incorporatingthe first even order strobe signal STB_EV<0> and the first odd orderstrobe signal STV_EV<1>.

In addition, an integrated odd source signal PSRC_ODD is generated byincorporating the first odd order strobe signal STB_OD<0> and the secondodd order strobe signal STB_OD<1>.

According to the integrated even source signal PSRC_EVD and theintegrated odd source signal PSRC_ODD, a control signal PINB<0:5> isgenerated.

When the up bank BK<a:d> are accessed consecutively, the up bank BK<a:d>may activate the integrated even source signal PSRC_EVD at a timinglater than a normal timing. In this case, an error may occur in thecontrol signal PINB<0:5>, thereby causing a defect in the data readoperation.

However, according to the this embodiment as described above, a firstorder strobe signal pair STB_OD<0> and STB_EV<0> and a second orderstrobe signal pair STB_OD<1> and STB_EV<1>, each of which is separatedinto an even order and an odd order, are generated. In addition, asdescribed with reference to FIG. 5, the integrated even source signalPSRC_EVD and the integrated odd source signal PSRC_ODD are preventedfrom overlapping each other by the overlap prevention unit 522.

Therefore, although consecutive accesses to the up bank BK<a:d> or downbank BK<e:h> are generated, a control signal PINB<0:5> having a normaltiming can be generated, so that data can be normally latched.

Referring FIG. 7, an electronic system 1000 may include a controller1100 and a memory device 1200. Memory device 1200 may be configured as asemiconductor integrated circuit, in accordance with embodiments taughtherein, and may be similar to or identical to one or more of theembodiments discussed with respect to FIGS. 1A-6. System 1000 may beformed in various ways such as coupling the individual components ofsystem 1100 together or integrating the components into one or a numberof chip-based units using conventional techniques. In an embodiment,system 1000 also includes an electronic apparatus 1300 and a bus 1400,where the bus 1400 provides electrical conductivity among the componentsof system 1000. In an embodiment, the bus 1400 includes an address bus,a data bus, and a control bus, each independently configured. In analternative embodiment, the bus 1400 uses common conductive lines forproviding one or more of address, data, or control, the use of which isregulated by controller 1100. In an embodiment, electronic apparatus1300 may include additional memory for the intended functionalapplications of electronic system 1000. The memory device 1200 are notlimited to, dynamic random access memory, static random access memory,synchronous dynamic random access memory (SDRAM), synchronous graphicsrandom access memory (SGRAM), double data rate dynamic ram (DDR), anddouble data rate SDRAM, arranged according to the various embodiments astaught herein. The memory device 1200, in accordance with variousembodiments as illustrated in FIGS. 1A-6, may be realized in the readoperation and the write operation using the test pads.

In various embodiments, peripheral device or devices 1500 are coupled tothe bus 1400. Peripheral devices 1400 may include displays, imagingdevices, printing devices, wireless devices, wireless interfaces (e.g.wireless transceivers), additional storage memory, control devices thatmay operate in conjunction with controller 1100, In an embodiment,controller 1100 may include one or more processors. In variousembodiments, system 1100 includes, but is not limited to, fiber opticsystems or devices, electro-optic systems or devices, optical systems ordevices, imaging systems or devices, and information handling systems ordevices such as wireless systems or devices, telecommunication systemsor devices, and computers.

While certain embodiments have been described above, it will beunderstood to those skilled in the art that the embodiments describedare by way of example only. Accordingly, the circuit described hereinshould not be limited based on the described embodiments. Rather, thecircuit described herein should only be limited in light of the claimsthat follow when taken in conjunction with the above description andaccompanying drawings.

What is claimed is:
 1. A semiconductor integrated circuit comprising: amemory block partitioned into a first region and a second region; a datalatch unit configured to latch data outputted from the memory block inresponse to a control signal; and a control circuit configured togenerate a source signal separated into an odd order and an even orderin response to a column access signal consecutively inputted to accessthe first region or the second region, and to generate the controlsignal in response to the source signal.
 2. The circuit according toclaim 1, wherein the data latch unit comprises a pipe latch.
 3. Thecircuit according to claim 1, wherein the column access signal isgenerated according to a read command.
 4. The circuit according to claim1, wherein the control circuit is configured to generate a first strobesignal for access the first region and a second strobe signal for accessthe second region using the consecutively inputted column access signal.5. The circuit according to claim 4, wherein the control circuit isconfigured to separate each of a first strobe signal and a second strobesignal into an odd order and an even order, and to generate the sourcesignal.